Re: [PATCH v5 14/28] x86/fpu/xstate: Prevent unauthorised use of dynamic user state

[Bae, Chang Seok]

On Jun 16, 2021, at 12:28, Hansen, Dave <dave.hansen@xxxxxxxxx> wrote:
> That's odd.  How is it possible that the performance of XGETBV(1)
> informed the design of that patch without there being any mention of
> XGETBV in the comments or changelog?

Yes, I admit that it is wrong that the text there highlights the benefit
without fairly mentioning the cost. I will make sure v6 covers them all.

Thanks,
Chang